4'C-ethynyl-thymidine acts as a chain terminator during DNA-synthesis catalyzed by HIV-1 reverse transcriptase.


Recently, 4'C-ethynyl nucleoside analogues have been identified as ...
Recently, 4'C-ethynyl nucleoside analogues have been identified as highly potent agents against HIV-1, including several multidrug-resistant strains. In contrast to most known nucleoside inhibitors 4'C-ethynyl nucleoside analogues possess a 3'-hydroxyl function. Here we show that the 5'O-triphosphate of 4'C-ethynyl thymidine gets readily incorporated into a nascent DNA strand by HIV-1 reverse transcriptase and significantly inhibits further post-incorporation chain extension by the enzyme.




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